33. a2a4 Gukesh's patience in this game caught my attention. This move is one that would not be considered by many chess players, simply preventing the pawn from being captured on a2. 33... c4c6  34. e5d4  34... c6g6 After playing an excellent game and finding defensive resources for many moves, Caruana makes a blunder in time trouble. 35. f1f4 Now there's no defense for the d2-pawn, and Black loses what was saving his position. White continues with an extra pawn and an attack, and the game doesn't take long.